Oh, that's right! I do remember the discussion about changing to CNAMEs.

I wonder if Quarry also keeps audit logs of the queries it ran and how long
they took. It would be useful to display them in form of a trend line, for
instance.

On Sat, Dec 30, 2017 at 12:28 PM, Bryan Davis <bd...@wikimedia.org> wrote:

> On Sat, Dec 30, 2017 at 9:51 AM, Huji Lee <huji.h...@gmail.com> wrote:
> > I feel like Quarry is slower than before (before being last week or last
> > month). Queries almost always get queued, and once executed, simple
> queries
> > take longer to result.
> >
> > I have no idea how to investigate this though. Any thoughts?
>
> Quarry uses the *.analytics.db.svc.eqiad.labsdb servers. Before
> 2017-12-13 these servers were only used by tools which had explicitly
> changed their configuration to point to the new servers. After that
> date the legacy *.labsdb service names became CNAMEs (DNS aliases) to
> the analytics.db service names. This greatly increased the load on the
> backing servers which would logically make them slower to return
> results.
>
> Bryan
> --
> Bryan Davis              Wikimedia Foundation    <bd...@wikimedia.org>
> [[m:User:BDavis_(WMF)]] Manager, Cloud Services          Boise, ID USA
> irc: bd808                                        v:415.839.6885 x6855
>
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